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Yep I was aware they are earlier than the current drivers you have, maybe the drivers you are using are not compatible?
Otherwise I would suggest installing the card again from scratch.
Do you have an onboard mainboard video card you can move your monitor over to so that you can take teh ATI out.
The two links above one shows how to install the card.
I have seen issues with ATI cards and some simply will not work properly with certain mainboards.
The only solution for the unfortunate owner was to buy a different card, yet the ATI can work pefectly on other mainboards.
It is just one of those things.

Hi johndix2 the best drivers are the default on the cd that came with your card.
Roll back feature in windowsxp allows to roll back the drivers.
If there is errors of any kind it is not always fixed by updating butrather using drivers that windowsxp will accept.